ORIGINAL: Razor-RCU
The OS-46FX turns up nicely... The 50SX (I've had 2) are GREAT engines and with a simple Tower muffler become quite speedy- I would sell it and get a Webra-50GT
Went to the LHS and they had a 50sx. Which tower muffler do you use, they have one for the 46 and the 61-75? I would assume the 46 but just in case.